# Dev Board Toolkit — Pinouts, wiring, key matrix

> Pinouts, wiring, key matrix (iPhone/iPad app by Nerd Alchemy LLC.)

- Source: https://appshunter.io/ios/app/dev-board-toolkit/id6829568246 (this page in markdown: same URL + `.md`)
- Developer: [Nerd Alchemy LLC](https://appshunter.io/developer/927008025)
- Category: Developer Tools, Utilities
- Price: $9.99
- Age rating: 4+
- Requires: iOS 26.0 · 12 MB
- Languages: American English
- Released: 2026-11-03
- Data updated: 2026-11-06

## What is Dev Board Toolkit?

Dev Board Toolkit plans microcontroller projects. Pick a board, add your sensors, displays and parts, and it finds pins that work, checks for conflicts, draws the wiring and writes the pin set-up code. It also plans hand-wired keyboards, from layout to matrix to QMK and ZMK configuration.

BOARDS
• Pin maps drawn from the maker's own documents, with every pin's functions and cautions: boot and strapping pins, input-only pins, ADC2 with Wi-Fi, flash and PSRAM pins, USB pins, NFC pins, 5 V tolerance
• Wireless and USB facts: Wi-Fi standard and bands, Bluetooth Classic and LE, Thread, Zigbee, Matter, ESP-NOW, LoRa, native USB and HID
• Board finder: filter by radio, USB HID, free pins, ADC pins, battery charger and more
• Compare up to three boards side by side
• Every fact lists its source document

PIN PLANNER
• Add modules and parts; pins are assigned automatically, and you can lock or move any of them
• Conflict checks: I²C address clashes, SPI chip selects, strapping pins, input-only pins, pins that toggle at boot, current limits
• Wiring diagram in jumper-wire colours: red power, black ground, yellow SDA, green SCL, blue SPI
• Starter code: C++ sketch (Arduino IDE), MicroPython, CircuitPython and ESPHome YAML
• Pin table and parts list as CSV, wiring diagram as PDF or SVG, a wiring checklist and a project PDF

LED ON A PIN
• Series resistor at the pin's real logic level, snapped to E12 or E24
• Pin and total current against the board's limits, transistor drive when a pin can't supply it, and a warning when a blue or white LED has too little headroom on 3.3 V

KEYBOARD PLANNER
• Presets or KLE import; splits, ortho layouts and macropads
• Rows × columns for your controller's free pins, diode direction, encoders, OLED, RGB with a brightness cap for the USB budget
• Trackpads and trackballs: Cirque and Azoteq trackpads and PMW3360 sensors, with their bus, interrupt and reset pins
• Generates configuration for QMK and ZMK firmware, a plate SVG and DXF, keycap counts and a hand-wiring checklist

POWER, LEDS AND BUSES
• Power budget from your parts, regulator heat, battery life with sleep
• Addressable LED strips: current, power injection, wire gauge, data level shifting
• I²C address finder, pull-up sizing, UART baud error, SPI wire length

LIBRARY AND BENCH
• About 100 modules: sensors, displays, radios, drivers, level shifters, LEDs, audio, power
• Maker library: components and their pin orders, connectors, protocols, power, reference tables and short how-tos
• Ohm's law, LED resistor, divider, RC, colour codes, SMD codes, E-series, wire gauge, units

Works with boards such as Raspberry Pi Pico and Pico 2, Raspberry Pi 4, Arduino Uno, Nano, Mega and Leonardo-format boards, ESP32, ESP32-S3, C3 and C6 DevKits, Seeed XIAO, Pro Micro-format and nice!nano-format controllers, Adafruit Feather and QT Py, Teensy 4.x, STM32 Black Pill and more. Trademarks belong to their owners; this app is not made or endorsed by them.

Projects keep the board, parts, pin plan, power plan, keyboard plan, notes, photos and checklists, and export as a .devboard file.

Works offline. No account, no ads, no tracking.

Check every plan against your board's silkscreen and datasheet before you power it. Low-voltage DC only; the app does not cover mains wiring.

## Is Dev Board Toolkit safe?

Not enough ratings yet to assess Dev Board Toolkit.

## Is Dev Board Toolkit legit?

Dev Board Toolkit appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Dev Board Toolkit is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-11-03

No release notes.

## More apps by Nerd Alchemy LLC

- [Lake Martin Voice](https://appshunter.io/ios/app/lake-martin-voice/id953304313)
- [Aikido Encyclopedia](https://appshunter.io/ios/app/aikido-encyclopedia/id1104990681)
- [Diamond Sports Trivia](https://appshunter.io/ios/app/diamond-sports-trivia/id1153777521)
- [SiteWrench](https://appshunter.io/ios/app/sitewrench/id6829261775)
- [Luthier Toolkit](https://appshunter.io/ios/app/luthier-toolkit/id6829345424)
- [Amp Tech Toolkit](https://appshunter.io/ios/app/amp-tech-toolkit/id6829353883)

All apps by Nerd Alchemy LLC: https://appshunter.io/developer/927008025

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-06.*