Pinewood Timestoppers' Timestopper Pinewood Derby timers
and Pinewood Derby judges make Pinewood Derby winners.

Timestoppers have been a favorite of Cub Scouts for over 30 years.

Timestoppers come in three models: the T-IV series which captures the order that cars finish; and the TS300 and TS400 series which both measure place and the time each car takes from start to finish of a race.   (T-III, TS100, and TS200 are no longer sold.)


(See T-IV documentation.)

timestopper T-IV panel


Hand Held Unit

Displays order that cars finish

Requires 100 watt overhead lamp

  • T-IV 2 Lanes $85      
  • T-IV 3 Lanes $95      
  • T-IV 4 Lanes $129      
  • T-IV 5 Lanes $159      


(See TS400 documentation.)

timestopper TS400 panel


Hand Held Unit

Displays time and place for each lane

Requires 100 watt overhead lamp

  • TS400 1 Lane   $170      
  • TS400 2 Lanes $190      
  • TS400 3 Lanes $210      
  • TS400 4 Lanes $230      
  • TS400 5 Lanes $250      


(See TS300 documentation.)

timestopper TS300 panel


Computer Display

Displays time for each lane, on your computer

Requires 100 watt overhead lamp

  • TS300 2 Lanes $128      
  • TS300 3 Lanes $176      
  • TS300 4 Lanes $182      
      For required display on a computer:
  • GrandPrix Race Manager   $60      
  • RS-232 cable (supplied)
      To connect to a USB port:
  • USB Adapter   $29.00      

Optional Parts, Extras, and Repairs

Phototransistor Sensor As a convenience to our customers, we offer a replacement phototransistor sensor that can be used to replace a broken finish sensor on a lane of a T-IV, TS300, or TS400 Timestopper.   Sensor assembly notes are provided here including a schematic with wiring details.

  • Phototransistor   $7.49      

Slotted Photosensor As a convenience to electronic hobbyists, we also offer a PCB-mounted photo-logic slotted photosensor that is identical to that used for each start sensor on our TS300 and TS400 Timestoppers.   The printed circuit board measures 1.5" by 0.5", with the slot of the photosensor centered and running parallel to the 0.5" dimension, includes a 0.01uF filtering capacitor, and has two mounting holes for screwing the PCB to another structure.   Sensor specifications and application notes are provided here along with a schematic with wiring details.   These slotted photosensors are useful in applications such as sensing physical disturbance to objects, sensing window and door disturbances for burglar alarms, object presence detection, position encoding such as for end-stop control, position calibration, automatic event-triggering such as for a camera, timing detection, synchronizing actuators, and many others.

  • Slotted Photosensor (PCB mounted)   $10      
  • Lot of 10EA Slotted Photosensors (each PCB mounted)   $80      

Repair Orders As a service to our customers who have called and requested parts and/or labor for a repair, use the following "Add to Cart" button once, and insert in the process the appropriate quantity as a multiplier, in order to effect your payment of pre-arranged charges:

  • Unit of Repair   $20      

Complete Your Order Here:
(Shipping options are presented during checkout.)

(Standard shipping for most items is UPS Ground, but other choices are available during checkout.
Call or email for arrangements to ship outside the continental USA.)

Pinewood Timestoppers
1795 Guinda St.
Palo Alto, CA 94303
Phone (TS400 questions): 408-245-8006
Phone (T-IV and TS300 questions): 931-542-0970
Email: Pinewood Timestoppers!

Copyright 2011, 2012, 2013 Pinewood Timestoppers