Regulator Board
Board layout with the regulators and 5V reference from the previous design for noise testing.
41J Blog
My contribution to the increasing entropy, and eventual heat death of the universe
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Recent Posts
- More Lasertec C130 Notes
- LaserTec C130 Notes
- Arducam Pivistation 5 Klarity I2C
- Pacific Biosciences Accuracy Notes
- Random Notes 5
- Unknown rotary valve (from Affy fluidics)
- BW Spectrometer Notes
- Random Notes 4
- PX-045A Printhead
- Random Notes 3
- Random Notes 2
- Epson UK Printheads (SX series)
- Random Notes
- E32-900T30D Module
- IRT-3000 IR Microscope Pics
- JFC-1100 Sputter Coater Pics
- VE7800 Filament Pics
- Pfeiffer TC600 Turbo Pump Driver Notes
- Keyence Ve7800 Notes
- Ve7800 Turbo Connection
- More VE7800 Pics
- Ve7800 Pics
- Some Awful Python Code
- Ion314 die images
- N choose K, with T targets. Probability of choosing at least one target
- Illumina iSeq (FireFly) IC Images
- Ubuntu 20.04 Fujitsu FAREHT1 Mouse/Touch Screen Fixes
- Siglent SSA3015X Plus Upgrade Issues
- Cost per Gigabase
- Global Sequencing Capability Notes
- Fujitsu FAREHT1 Laptop
- Playing with a Cepheid SmartCycler 2
- Startups and Japan
- DR4000U Repair and Filter Notes
- Newport 841-P-USB (Black case) Notes
- Inside the Lucira Check It COVID-19 Test
- Roswell Revisited
- Bio-rad SmartSpec Plus Spectrophotometer
- AxBio – Nanopore Sequencing Startup
- The Lunatic from Unchained Labs
- A quick look at some Theranos patents
- Mesoscale Diagnostics
- SomaLogic
- Quanterix
- Olink
- DU530 CFL Spectra – Again
- Nanodrop Notes
- Beckman DU530 Spectrophotometer CFL Spectra
- Beckman DU530 Photospectrometer (Hach DR4000?) Photodiode Amplifier Board
- Beckman DU530 Photospectrometer notes
- Nooma Bio
- Nautilus Prospectus Review
- QuantumSi Prospectus Review
- Nautilus Biotechnology
- Twinstrand Biosciences
- Dreampore – Protein Sizing
- Dreampore – Nanopore Protein Sequencing
- SBIR – America’s Training Program?
- Centrillion Update
- MiSeq Cost Analysis
- The Next Few Years in DNA Sequencing
- Singular Genomic Systems S-1 Review
- The Centrillion VirusHunter
- Armonica update
- DNA Sequencing and Japan
- Some Random Filters from eBay
- Genome Analyzer TIRF Alignment
- Photobeaching on the Genome Analyzer, using a IMX178
- Ultima Genomics
- Single Dye Experiments on a Genome Analyzer
- Z1 Coulter Particle Counter Teardown
- Genome Analyzer Quantum GEM 532nm Laser and filters
- Coulter counter/nanopore demonstrator
- LX-4000 stage controller notes
- Manteia Predictive Medicine
- GeneMind’s Single Molecule Sequencer
- The $15 Genome through reduced reagents
- QuantumSi’s Protein Sequencing Approach
- Lingvitae AS
- Are there mutations in SARS-CoV-2 CDC qPCR Primer Sites?
- Stratos’ Other Approach…
- Apton Biosystems Update
- Scripts to download SARS-CoV-2 replacements
- Singular Genomics Systems
- Single Technologies
- Element Biosciences
- Sony CCD-V8AF Video Camera Recorder – Viewfinder CRT Notes
- Sony CCD-V30 Camera Viewfinder CRT Notes
- Playing with a Handycam CCD-F340 Viewfinder CRT Notes
- Panasonic SJ-MR100 Notes
- Thoughts on a new approach to viral testing
- Issues Replicating Bioinformatics Papers
- Quick script to download Uniprot info for proteins from Pfam trees (Newick tree format)
- Kodak ES 4.0 teardown pics
- An attempt to read Pfam database dumps…
- ESC-30A Brushless DC motor driver Notes
- Sony CCD M8 Video Camera Notes
- Philips hair clipper PCB
- ILX511 CCD Interface r2
- DIL8 Boost converter design
- Notes on fixing a broken Gentoo grub install…
- ILX511 Interface PCB for ICE40HX8K
- ILX511 Update
- Notes on using a ILX511 Linear CCD, AD9225 ADC, ICE40HX8K and Nmigen
- Logomaker quick example
- ICE40HX8K AD9225 ADC with Nmigen
- Nmigen UART Notes
- Nmigen PLL ICE40HX8K/HX1K
- Various OP177 die images
- Notes on the Keithley 2002 ADC
- Multislope ADC Bring up (Dual slope)
- Thoughts on interviewing with YC as a science based startup
- Gene Editing Companies (December 2018)
- QuantumSi
- 2018 DNA Sequencing Raises and Acquisitions
- Thoughts on Ion Torrent and the iSeq
- How much does it cost to ship 1cm^2 of silicon?
- Stratos Genomics
- Illumina consumables are 90% profit?
- Evonetix and other thoughts
- An Encoding And Correction Approach for DNA Data Storage
- Using an SBS-like approach to selectively amplify
- Eve Biomedical
- Apton Biosystems
- Universal Sequencing Technology
- Read/Write DNA Devices – pt2
- Roswell Biotechnologies
- InSilixa
- iNanoBio
- QuantumDx
- DDC112 Board Design/Bring Up
- Reprogramming a ATTINY85 to use an external oscillator using the Arduino IDE
- DNA Synthesis Markets
- DNA Synthesis Research Groups
- Nanopore DNA Sequencing Research Groups (August 2018)
- Virtual Nanopores and DNA Synthesis
- Genapsys
- Sequencing with Mixtures of Three Bases
- Read/Write DNA Devices
- Iridia (was Dodo Omnidata)
- DNA Synthesis Companies (August 2018)
- Northshore Biosciences
- Direct Genomics
- Depixus (was Picoseq)
- Cygnus Biosciences
- Centrillion Technologies
- Caerus Molecular Diagnostics
- Bionano Genomics (Bionanomatrix)
- BGI – Miscellany
- BGI – Complete Genomics
- Minispin teardown pics
- Corning PC-420D Hotplate/Stirrer repair
- BGI Part 1 – Business
- Base4 Innovation Ltd
- Armonica Technologies LLC (now Inc)
- DNA Sequencing Companies (Updated May 2020)
- Inheco Control 96 + CPAC Ultraflat Notes (TEC/Peltier)
- 5517B Laser Tripod Mount
- Veeco/Bruker AFM (nanosope) head teardown pics
- uMD1 – ChipKIT 32 – HP Interferometer Interface
- uMD1 Build Notes
- Penrose Puzzle – Lessons Learned from Rev 0
- Dyeing 3D Printed Parts
- Embedding Electronics in Transparent Resin
- HP Interferometer Notes
- Genome Analyzer II Internal Pics
- Another iPhone MEMS Mic (different configuration+layers)
- The iPhone MEMS Mic in a SEM
- Throwing the BME280 Combined Pressure/Humidity Sensor in a SEM
- MXq – Quad Core Android Thoughts (and console kernel messages)
- 11inch Celestron CPC Series Telescope Repair – Initial Photos
- Moving a 1Kg Static Load
- The Hackerfarm Taobao Shuttle
- TSOP48 ZIF Socket Footprint
- A Note on Collaborations
- Fabricating oval through-hole pads
- A Brief Computational Analysis of “Pen-Pineapple Apple-pen”
- esp32 USB Stick (esp32 + ch340g + buck conv + sd card)
- Kicad esp32 schematic symbol
- The esp32 wroom32 design
- Dual esp8266 board
- Weird PCB Layouts with Kicad
- PIC Versus AVR
- Creating the miror swtich
- Random SEM Images – MCM68364 64KB ROM
- Ugly Solutions
- The AT24C01 and the AT24C01A
- The esp8266 and SD Cards
- The CL0116 Solar Lantern Controller IC
- FG-100 Soldering Iron Tip Temperature Sensor
- Fiddling with a cheap 5 port dumb switch to add VLANs/port mirroring
- Marking intervals in gnuplot graph (with shading)
- The Wifi Doogle
- awk – print text between 2 identical markers in a file
- esp8266 SPI duplex transfers
- A git pre-commit hook to do SVN style $Date$ substitution
- SDG2024x Flash Recovery Files
- SDG800 Reading out flash
- SDG800 recovering from a hosed u-boot
- Hacking around with a SDG800 (SDG805)
- This picture is all wrong
- Sony WPSD5 Surround Sound System “repair” Notes
- A Note On The Ion Torrent Flow Order
- Inside a cheap bubble blowing toy
- Genia’s pore insertion technqiue
- Interfacing Hitachi HD44780 LCDs using I2C on an Arduino
- Notes on Genia’s new paper – nanopore SBS
- PunkSeq10 Schematics and Gerbers
- Are you sure this isn’t horse? – DNA Sequencing is Universal Sensing
- Road to the $1 Genome
- Further Details on the Illumina Firefly
- Personal Genomics Inc./CrackerBio
- A Solexa Story
- Speculation on the Illumina FireFly
- Mitutoyo Digimatic 500-133U CDL-6″B Battery Cover Model
- Notes 16/1/2016
- CX10 Mini Quadcopter 3D Design files
- PunkSeq10 r2
- Thoughts on Writing for Hackaday
- Hobbyist Tech Magazines in Japan
- NEC Teledata Terminal Shop Register (TD7)
- A 1960s Japanese Telephone
- The Repeater – CP-33 Repeat Card Player
- Motorboard – Easydriver/Arduino/PKE243DA interface r1
- Atari Punk Console rev3
- Arduino 8 Channel ADC Board r3
- Veeco Nanoscope V Multimode AFM First Imaging Tests
- Axopatch 200A with micropipette first tests
- Playing with a micropipette puller (Sutter P-97)
- AD5791 Board rev4
- Photodiode array project rev1
- Cracklebox Build Notes
- LEDs as light sensors
- Playing with an Electret Mic
- Photodiode Amplifiers (Transimpedance)
- Scientifica Patchstar
- NEC NP215 DLP Projector Teardown
- AD5791 DAC Arduino shield Rev 3
- LTC1859 ADC Board rev 2
- Atari Punk Console Rev2
- Can Radar Layout
- PI P-915K238 XY Piezo stage
- Inside the Thorlabs MDT690
- SPM Rev2
- Interferometer notes
- Cracklebox rev 2.5
- Krackdoos (Cracklebox) rev2
- SPM Notes (3rd Sept 2015)
- Regulator Board
- +/- 13V Powerboard Rev2
- Couldn’t remount RDWR because of unprocessed orphan inode list. Please umount/remount instead
- Cheap Laser Pointers
- +/- 13V PSU Board Bring up
- Cheap Shenzhen Inspection Microscopes
- AD5791 Board Patches Revisited
- AD5791 Arduino Shield Rev 2
- AD5791 Shield First Rev
- Phonecall From a Scammer
- Atari Punk Console Layout
- LTC1859 8 Channel, 100KSPS +/- 10V 16bit ADC Arduino Shield layout
- Starpack 136 Powersupply
- Surface Pro 3 Charger “Repair”
- Kraakdoos Layout
- Picomotor driver scope traces
- +/- 15V and 5V REF board
- AD5791 Arduino Shield
- AD5791 20Bit DAC Evaluation board with Arduino
- LTC1859CG Evaluation board with an Arduino
- Picomotor 8351 Internal Pics
- Playing with Picomotors
- Cheap Z-stage (SELN LZ-60 Shengling Precise Machinery CO. Ltd)
- Chuo Seiki AMH-13
- Basic bowtie2 alignment notes
- Using BLAST+ for nucleotide alignments
- Interfacing Chuo Seiki stages
- Axopatch 200A Internal Pics
- Lab workbench build notes
- In-place Radix sort O(k) space overhead
- Finding the majority element in a list
- Keyence VE7800 PCB Pics
- Keyence VE7800 Operating Procedure
- esp8266 and kr580vm80a image maps
- Creating LeafletJS tile sets in golang
- Fractal Slippy Map in golang and LeafletJS
- Serving server generated PNGs over HTTP in golang
- Creating a PNG image in golang
- A short review of linear motion
- Vacuum pump types
- Sputtering machine notes
- Imaging of Rice – A review
- Visit to see a SEM (electron microscope)
- Elmo CCD Security camera
- National “TV Camera” Vidicon
- Installing the esp8266 SDK
- Kindlegen, W14001: Hyperlink not resolved errors
- Kohzu linear stages
- Chuo Seiki MMU-60X-H1 XY Stage
- Simple scatter plot in gnuplot
- MPR121 Captouch sensor notes
- MMA7455L 3-axis accelerometer notes
- hp t5325 thin client information and manuals
- HY-DIV268N-5A Stepper driver with Arduino
- Using kindlegen to make a Kindle book
- SEM (Scanning Electron Microscope) Notes
- The Maximum Subarray Problem
- Most common git screwups/questions and solutions
- Select random line from a file in a single pass
- Serving content over HTTPS in golang
- Serving gziped connect via HTTP in golang
- Connect via a SOCKS server in golang
- USRP1 simple data capture in C++ example (UHD)
- ESP8266 – esp1 PCB scans
- Portable electronics toolkit
- Ultra-cheap Chinese Microcontrollers
- Some simple Arduino code to read from a keypad
- Using the Arduino tools from the Linux command line
- Simple JS->DNS Proxy with golang server side
- esp8266 IoT SDK 0.9.5 release, my notes
- Olimex esp8266 PCB Schematics/Layout
- esp8266 analogue input
- esp8266 notes summary
- MSP430Watch2 – Barometer and Wifi (PCB Design)
- BMP180 Barometric Pressure Sensor
- Creating an SVG in Javascript using FabricJS and downloading it locally
- Creating an SVG in Javascript, trivial example
- esp8266 esp1 device programmer gerbers
- Kicad Gerber renaming script for OSHPark (and seeed etc) submission
- esp8266 sleep modes
- Anritsu MT8815b Radio Communication Analyzer Notes
- The esp8266 run loop and messaging
- golang websocket to tcp forwarder
- esp8266 access point mode notes
- Some esp8266 SDK Library symbols
- esp8266 writing to internal flash (basic key/value store)
- Accepting incoming tcp connections on the esp8266 (trivial example)
- esp8266 XBee carrier board PCB design
- esp8266 GPIO input configuration
- esp8266 serial (UART0) tx/rx
- esp8266 wifi doesn’t connect
- esp8266 module types
- A standalone sscanf implementation (for the esp8266)
- Safecast NEMA format notes (bGeigieNano)
- Installing Nagios on Debian Jessie and SNMP (UPS) monitoring
- Posting to the Safecast API from the esp8266
- esp8266 client mode (connect to remote host) simple example
- Paldio パルダイオ 623P
- A Par can stage light notes
- Arduino SNMP Voltage Monitor
- ESP8266 Notes
- Gorilla Websockets, golang simple websockets example
- Getting to awa-kamogawa from Tokyo by train
- Emscripten calling JS from C and returning by reference (pointer)
- Calling JS from C using EM_ASM in Emscripten
- Compiling OpenSSL and libssh2 with emscripten – notes
- Sony/Tektronix 3066 DC-3GHz Realtime spectrum analyzer
- TDS2024 Images
- Very Simple Websocket example in golang
- Typical NPN transistor configurations
- STM vibrational compensation
- Agilent 6624A DC System Power supply
- A 2N2222 die image
- Astable multivibrator RGB flasher PCB design
- The iPhone’s MEMS sensors
- A Common Emitter Hartley Oscillator Notes
- Logitec LBT-VRU01 (bluetooth LE iPhone locator?)
- NPN Common Collector, Colpitts oscillator notes
- Tank Circuits
- NPN BJT Common emitter inverting amplifier
- Simple example of SDL in Emscripten (generating graphics from C)
- Phase Shift Oscillator – High Pass configuration
- Phase Shift Oscillator
- Casio F91W dimensions
- Astable multivibrator oscillator and a little oscillator history
- Electromechanical Oscillator
- C++ convert to/from string
- Asimov on DNA Sequencing
- Simple basic heatmap in D3.JS
- Simple Bar and XY line graph in D3.JS
- Cutting down LCDs
- Driving a tiny stepper on an Arduino (without a driver!)
- Stepper motors notes
- Read a local file into a Javascript string
- Lack of return causes abort() in Emscripten
- Calling C from JS with Emscripten, minimal examples
- Barco OMIX O10 8×11 LED array teardown
- Adding a new program to alternatives manually
- Debian Jessie Emscripten installation notes
- MSP430 with ST7032i, now working!
- An ST7032i on an Arduino Uno
- Union Microscope
- IBM Laptop Supervisor (BIOS) password reset
- STM32-Discovery on Linux
- Slippy maps
- msp430f2013 I2C frustrations
- Inside a 1USD Fingerprint reader
- MSP430 Development on Linux using the eZ430-F2013
- CCD Notes
- Canon Ixy 60 CCD experiments Part 2
- Nginx caching reverse proxy configuration
- Canon Ixy 60 (Powershot SD450)
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About
My name is Nava Whiteford. I’ve worked for a few sequencing companies. I have equity in a few sequencing companies based on my previous employment (I try to be unbiased in my posts). You can contact me at: [email protected]
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