Synopsis - These are the latest schematics for the Speed Climbing Timing system. In the process of improving and refining the system, the schematics changed substantially from the original schematics I posted. One of the biggest changes was eliminating the LM339 comparator circuitry for all 4 sensors (2Xhands 2Xfeet). It was just not reliable and too twitchy. Added an LED as feedback to the climber on the hand sensor and added the starter console schematics and base station schematic changes.

There are 6 pages of schematics that cover the system (currently). Click on each image to get an enlargement.

Base station display controller:


Hand sensor:


Foot sensor


Starter’s console:


Add capacitance to the power supply on the ET-AVR stamp dev board:


Example wiring diagram that shows two hand sensors attached to the Base Station through RJ45, CAT5 cabling:



I may scan and post the schematics of the large LED display board later. That board is a pre-assembled module I purchased based on the Maxim 7219 LED display chipset.

AVR Code for the firmware for the base station and sensor microcontrollers will be posted next week. All code will be open sourced as well as these designs.
Speed Climbing Timing Part 1 - Sensors
Speed Climbing Timing Part 2 - Controller
Speed Climbing Timing Part 3 - Integration
Speed Climbing Timing Part 4 - Touch Pad Construction
Speed Climbing Timing Part 5 - Schematics
Speed Climbing Timing Part 6 - Perf Board
Speed Climbing Timing Part 7 - Display
Speed Climbing Timing Part 8 - Hand and Foot Sensors
Speed Climbing Timing Part 9 - Demonstration
Speed Climbing Timing Beta Test Boulder Rock Club
Speed Climbing Timing - Sensor Improvements
Speed Climbing Timing SHIPPED!
Speed Climbing Timing Schematics (shipped v1)
Speed Climbing Timing Installation
Speed Climbing Timing - Laser-based Hand Sensor Design
Speed Climbing Timing Lessons Learned

Tags: ATMega128, Schematics, IR Sensors, ATMega8, LED display

Today I shipped a speed timing system to USAC representatives in Texas and New England - one for use at the Southwest Divisional Championship and another system for Northeast Divisional Championships.  One should be in Texas in 2-3 days and the other in Mass in 3-4 days.

Here's what was in the box:




Large display with power cable (includes 2 wall warts - one for the digit displays and one for the electronics - integrated into a single cable).

White CAT5 cables - various lengths from 50', 30', several 25' and 20' and 10'.   Since I don't know the gym and installation, a variety of lengths were enclosed.   You will not use all the cables sent.

2 Hand sensors (those with the yellow dots).
2 Foot sensors for false start detection (white triangles).
1 Starter console - using one of the CAT5 cables, connects to the main display
1 Bag of installation helpers (white cable ties to tie CAT5 cable to bolts in the wall to keep it out of the way of the route, 2 3/8" washers.)

This is a momentous occasion as it represents hundreds of man-hours of design, testing, improvements, and build-outs.

We hope that others may improve and build off this design for the benefit of speed climbers everywhere.

Landon

For more on the design and development of the Speed Climbing Timing System see these links:
Speed Climbing Timing Part 1 - Sensors
Speed Climbing Timing Part 2 - Controller
Speed Climbing Timing Part 3 - Integration
Speed Climbing Timing Part 4 - Touch Pad Construction
Speed Climbing Timing Part 5 - Schematics
Speed Climbing Timing Part 6 - Perf Board
Speed Climbing Timing Part 7 - Display
Speed Climbing Timing Part 8 - Hand and Foot Sensors
Speed Climbing Timing Part 9 - Demonstration
Speed Climbing Timing Beta Test Boulder Rock Club
Speed Climbing Timing - Sensor Improvements
Speed Climbing Timing SHIPPED!
Speed Climbing Timing Schematics (shipped v1)
Speed Climbing Timing Installation
Speed Climbing Timing - Laser-based Hand Sensor Design
Speed Climbing Timing Lessons Learned