Shared Projects

This is the actuation board for the RS16 submarine.

This board is the LED controller for the RS16 submarine.

This is an I2C bus board that turns two I2C into four through the use of two I2C mux chips.

This board talks to all I2C sensors on the RS16 submarine.

Made a modified NodeMCU with connector for OLED and Distance Sensors. Sorry its slightly too wide for a breadboard. This is my very 1st board so I’m just experimenting.

PRESSURE_SENSOR

Breakout board for an sdram chip

PRESSURE_SENSOR

Single Sided, SIL Version of DigiSpark

micro.modem.nano.v0a1

2 layer board of 0.67x1.67 inches (17x42mm). $5.60 for three.

Atmega328p-based 1200 Baud AFSK radio modem

MicroModem MicroModem is an open-source implementation of a 1200-baud AFSK / Bell 202 modem on the popular ATmega328p microprocessor. MicroModem can be used for things like ham radio APRS, AX.25, TCP/IP over SLIP, experimentation with mesh-networks, long-range wireless communication with sensors (Or friends! Or strangers!). It basically comes in two flavors: Prebuilt or DIY.

It is simple enough that, if you have some basic electronics experience, you can understand and build it yourself with a few components and an Arduino. You can also get a more advanced and prebuilt, fully tested MicroModem directly from original designer. He manufacture them personally, to the highest quality. (link/store at his site)

Please note that the resources listed here for building your own MicroModem are for an earlier, more simple version, than the one he currently offers for sale. While the two modems are functionally identical, the version he offers for sale has some technical refinements, and is implemented as an integrated board with MCU, USB and everything on one board, measuring only 3×5 cm. The DIY version is a board with all the external circuitry needed for turning a standard Arduino (or compatible like Microduino) into a MicroModem!

This is my adaptation of the MicroModem DIY, it is upsized to the footprint of the arduino nano (I got one for $2.99 vs the $18 it would take for the MicroModem Core USB), this is a conversion and should be a 1-1 pinout match for Marks MicroModem (so his pre-compiled hex files should work with no modification or need for re-compile) but for the MUCH cheaper arduino nano.

Correction for missing trace, and for the used arduino nano library to correct reversal of analog pins.

-untested- at the moment

Small adapter board for use with the Open Panzer Tank Control Board (TCB). On one end of the board you solder the leads from a 5-pin JST-XH pigtail, on the other end a right-angle Molex Micro-Latch connector. This allows the Tamiya IR receiver or “apple” (Item #53447) to be plug-and-play with the TCB.

See the Accessories page of the Open Panzer TCB wiki for more information.

Resources:

• Bill of Materials (PDF)

• Eagle CAD Board Files (zip)

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A small board which breaks out the lower end LTC2450 16 bit ADC from Linear Technology. This ADC has 1 single ended input and an SPI output. Its max sample rate is only 30sps, however it is very easy to use for the occasional simple conversion. The low pass filter on the input (R0 and C0) has a cutoff frequency of ~1.5KHz as prescribed by the data sheet. These values can be changed if needed.

Power: Vcc = 2.7V to 5.5V

Input : Vin = -0.3V to (Vcc + 0.3V)

GND, CS, SDO and SCK: self explanitory

Parts

U0: LTC2450CDC-1#TRMPBFCT-ND (DigiKey)

C0, C1: 0.1uF Ceramic 0603 Cap

C2: 10uf Ceramic 1206 Cap

R0: 1K 0603 Resistor

Headers: Generic 0.1" Pitch

Small adapter board for use with the Open Panzer Tank Control Board (TCB). On one end of the board you solder the leads from a 3-pin JST-XH pigtail, on the other end a right-angle Molex Micro-Latch connector. This allows Tamiya mechanical recoil units to be completely plug-and-play with the TCB.

See the Accessories page of the Open Panzer TCB wiki for more information.

Resources:

• Bill of Materials (PDF)

• Eagle CAD Board Files (zip)

.

Small adapter board for use with the Open Panzer Tank Control Board (TCB). On one end of the board you solder the leads from a 2-pin JST-XH pigtail, on the other end a right-angle Molex Micro-Latch connector. This allows Tamiya IR LEDs (Item #7255030) to be completely plug-and-play with the TCB.

See the Accessories page of the Open Panzer TCB wiki for more information.

Resources:

• Bill of Materials (PDF)

• Eagle CAD Board Files (zip)

.

engine simulator

Philips DS1100 iPod Connector

Panel used to hold two dials for my radio restoring project. One of them is used as soft latch power button and the other one as a rotary encoder to change the volume

RFD102A Breakout board. Well, other RFD chips work with it also (RFD88A, RFD103A).

EasyRaceLapTimer IR Transmitter

Breakout for 4x NXT ports and 2x Pololu Item #2130 (Dual motor driver carrier)